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LM5013-Q1: 用在IBB拓扑中输出波形为锯齿波

Part Number: LM5013-Q1

您好!

我在WEBENCH上用LM5013-Q1仿真的如下图,输入65V,输出50V,带载0.5A。然后我把这个电路画成IBB拓扑,原理图如下,应用是+15V输入,-50V输出,但是空载输出不稳定,为锯齿波,交流档测试输出端的波形如下图,请帮忙分析一下,谢谢!